We can produce hydraulic seal, 'o' ring, bellow with high accuracy and standard quality. We can use all synthetic rubber such as polyacrlic, GLT viton, EPDM, viton, ECO, NBR, fluoro silicon, HNBR, neoperene, silicon.
We can produce hydraulic seal, 'o' ring, bellow with high accuracy and standard quality. We can use all synthetic rubber such as polyacrlic, glt viton, epdm, viton, eco, nbr, fluoro silicon, hnbr, neoperene, silicon.
Rod seals are used in hydraulic cylinders for fluid sealing. They are external to the cylinder head and seal against the cylinderâ??s rod, preventing leakage of fluid from within the cylinder to the outside.
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Seal Materials (PTFE Grades): BR40, BR40M5, BR55M5, GL5M5, GL15M5.
Temperature Range: -50�°C + 200�°C (Depend upon O ring material)
Operating Pressure: Up to 800 bar (80Mpa)
O Ring material: Nitrile Rubber, Viton.
Seal Profile
Size Range:
We manufacture ROD (Step) Seals for the following range of Piston ROD diameter -
Chinese Hydraulic Screw-in Cartridge valve manufacturer AAK often receives various questions from overseas customers, some of which even come from college students conducting academic research. Today, we will once again introduce the main materials used for seals in hydraulic screw-in cartridge valves, as well as their respective characteristics:
1. Rubber Sealing Materials
1) Nitrile rubber (NBR)
- Excellent oil resistance, suitable for conventional hydraulic oil environments, with a working temperature range of -40 â?? to+120 â??.
- Mainly used in static sealing scenarios, such as O-rings and some combination seals
2) Fluororubber (FKM)
- High temperature resistance (up to 200 â??), chemical corrosion resistance, suitable for hydraulic oil containing phosphate esters or highly corrosive media.
- Commonly used in high-pressure systems or extreme temperature environments.
3) Silicone rubber (VMQ)
- Outstanding cold resistance (-70 â?? to+200 â??), but low mechanical strength, only suitable for static sealing
2. Polymer Sealing Materials
1) Polytetrafluoroethylene (PTFE)
- Extremely low friction coefficient, good self-lubricating properties, strong corrosion resistance, suitable for high-speed or chemically corrosive environments.
- Often used as a filling material in conjunction with rubber, or in combination with seals (such as Glay rings, seals).
2) Polyurethane (PU)
- High wear resistance and anti extrusion strength, suitable for high-pressure reciprocating motion seals (such as Y-shaped rings, U-shaped rings), working temperature -30 â?? to+100 â??.
3) Nylon (PA)
- Oil resistant and wear-resistant, used for non direct sealing components such as guide rings and support rings, with a working temperature of -40 â?? to+120 â??.
3. Metal Sealing Materials
Stainless steel/copper alloy
- Used for extreme high pressure (>32MPa) or high temperature (>450 â??) scenarios, achieving metal to metal sealing through precision machining.
4. Composite Sealing Materials
Clip on rubber+rubber (lace ring) or PTFE+rubber (Glay ring/Steller seal)
- Combining the elasticity of rubber with the wear resistance of PTFE/sandwich material, suitable for high-pressure dynamic sealing (such as valve spool and valve cage).
Selection Suggestions
- Normal working conditions: Priority should be given to using nitrile rubber or polyurethane.
- High temperature/corrosive environment: Fluorine rubber or PTFE composite materials are better.
- Ultra high pressure scenario: requires metal seals or combined sealing structures.
1. DOUBLE ACTING PISTON SEALS
Double-acting piston seals have a symmetrical profile cross section & identical sealing functions in both directions.
2.SINGLE ACTING PISTON SEALS
A single-acting piston seal is designed for cylinders where pressure is applied from one side only.
3.ROD SEALS
Rod seals maintain sealing contact in sliding motion between the cylinder head and the piston rod.
4.OIL SEALS
Rotary seals are use in rotating equipment like gear box, pumps, motors etc to retaining lubrication in bearings.
5.FABRIC SEALS
Fabric seals are flexible rotary seals mfg in cotton fabric reinforced body having spring loaded rubber sealing lip
6. METALLIC OIL SEALS
High pressure rotary seals are capable to withstand under high pressure application such as hydraulic pumps or motors, power steering application etc.
7. V SEALS
V-Rings are use as an dust seal or a guard in avoid ingression of the water or colant in the bearing chock.
8. U CUP SEAL
U-cup seals, as their name implies, have a U-shaped profile, including an outside static sealing lip and an inside dynamic sealing lip.
9. PNEUMATIC ROD SEALS
Pneumatic seals operate in dynamic applications, often at high speeds, generally with rotary or reciprocating motions.
10. PNEUMATIC SYMMETRICAL SEALS
where cylinders and valves are actuated by air pneumatic seals plays a vital role.
Sealing solutions for rotary shaft and fluid power applications including oil seals, end plugs, hydraulic and pneumatic seals. 4000 different seals from rubber and plastic.
IWP seal kit for lp for ceramic plunger is a set of seals,
Its longevity could be reaching 2000hours at first time to use.And up to 3000hours after replacement.
Recommend to replace seals in half year, twice in a year to keep machinery effectively.
Supplier: O ring, seal, mechanical seals, seal kits, hydraulic breaker, drilling machinery and construction machinery spare parts and components, crushing and screening spare parts.
